This controversial theory says the universe is subject to an ultimate, higher-order law that we can’t comprehend.

Physicists simplify the universe by studying closed systems. However, philosopher of physics Karim Thébault argues that embracing the openness of physical systems can lead to a better understanding of ...

The Copernican Principle, named in honor of Nicolaus Copernicus (who proposed the heliocentric model of the universe), states ...

The universe is truly magical: vast, mysterious, and endlessly fascinating. There’s something almost unreal about being able ...

Astronomers are watching a new comet pass through our solar system with great interest. Based on its glow, the 33-billion-ton ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. The size of the solar system is defined by the volume ...

Finding the universe's brightness is essential for confirming our theories of what makes up the universe. But to do so, scientists had to send a spacecraft far away from our sun. When you purchase ...

NEW YORK (AP) - A celestial object discovered decades ago is actually twins orbiting each other, a new study confirms. Scientists have puzzled over the object known as Gliese 229B, the first known ...